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Finding the Fourth Proportional to 484,434.40, 726,133.20 and 218,149.60

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Solution

The fourth proportional to 484,434.40, 726,133.20 and 218,149.60 is: 326,990.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,434.40 : 726,133.20 = 218,149.60 : x
  2. Step 2: Convert to fraction form
    484,434.40/726,133.20 = 218,149.60/x
  3. Step 3: Cross multiply
    484,434.40x = 726,133.20 × 218,149.60
  4. Step 4: Simplify right side
    484,434.40x = 158,405,667,126.72
  5. Step 5: Solve for x
    x = 158,405,667,126.72/484,434.40
  6. Step 6: Final answer
    x = 326,990.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.